While reading a book recently, I found the following sentence: "If you want to be a good parent, you need to walk your talk."
The problem was with the phrase, "walk your talk."
Judging from the context, I guessed that it means that "one should not be difference in his action and words."
But I am not sure whether I am right or not.
I looked it up in dictionaries but failed to find explanations.
Is the phrase an idiomatic expression or just one coined by the author?
Please help me find the answer.
Your interpretation of the meaning is correct.

The full idomatic expression is "If you talk the talk, you've got to walk the walk", but this is often shortened in the manner shown in your example.

If you search Google for "walk the walk" you'll find plenty of examples.


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can you please give me the name of the book? You are correct about the phrase-the meaning, in direct interpretation, means to act as you say, literally, not to say one thing and do another-I am trying to find out where the term came from.

If you can give me a reference, I would appreciate it.

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From my point of view "walk your talk" means that you say what you mean and you are a person of principle.